Combine these pairs of sentences as in the example. Example: The services are useful. The workers provide the services. => The services whichthe…

a. The goods which they need are essentialb. The school and hospitals they provide are essentialc. the goods which he buys are valuabled. The money which people earn buys essential commoditiese. The goods and services which people produce are very usefulf. the work which we do is called economic activityg. the work which people do provide them with moneyh. The economi activities which people undertake make up the economic system